{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Model Pt ( n ) / glassy carbon electrodes ( Pt ( n ) / GCE ) were prepared by deposition of mass - selected Pt ( n ) ( + ) ( n <= 11 ) on GCE substrates in ultrahigh vacuum ."}
{"Chemical": ["Pt ( n )", "glassy carbon", "Pt ( n ) ( + )"]}